From 24768d2d269e323713a79a366375c297968b8b15 Mon Sep 17 00:00:00 2001
From: Daniel Larimer <dlarimer@gmail.com>
Date: Mon, 19 Aug 2013 01:46:28 -0400
Subject: [PATCH] fixed compile bugs for friend constructors

---
 include/fc/optional.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/fc/optional.hpp b/include/fc/optional.hpp
index d0acd00..cdf5e06 100644
--- a/include/fc/optional.hpp
+++ b/include/fc/optional.hpp
@@ -213,6 +213,7 @@ namespace fc {
           _valid = false;
       }
     private:
+      template<typename U> friend class optional;
       T&       ref()      { return *ptr(); }
       const T& ref()const { return *ptr(); }
       T*       ptr()      { void* v = &_value[0]; return static_cast<T*>(v); }